Analysis

  • max time kernel
    137s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    31/03/2021, 16:36

General

  • Target
    document-900539577.xlsm
  • Size 106KB
  • Sample210331-pxy5rapk8j
  • SHA256 69952de5c84d4e1b2aec321a76841ea6b0facbd89b39fca0326d339a506ee45b
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • icedid

Campaign
  • 3633240867

C2
  • afdeserutil32.website

Signatures

  • IcedID, BokBot

    IcedID is a banking trojan capable of stealing credentials.

  • Process spawned unexpected child process 5 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • IcedID First Stage Loader 1 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\document-900539577.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1176
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\iekdhfe.dsk,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:3764
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\iekdhfe.dsk1,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:4004
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\iekdhfe.dsk2,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:2012
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\iekdhfe.dsk3,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:3224
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 ..\iekdhfe.dsk4,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:1900

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1176-2-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

        memory/1176-3-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

        memory/1176-4-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

        memory/1176-5-0x00007FFE21520000-0x00007FFE21B57000-memory.dmp

        memory/1176-6-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

        memory/1900-14-0x00000167F4AE0000-0x00000167F4AE7000-memory.dmp